$('.section-content li:nth-of-type(2)').hover(function(){
	
	$('#img1').attr("src","img/icon-nav-r-hover.png")
	
},function(){
	$('#img1').attr("src","img/icon-nav-r.png")
})
$('.section-content li:nth-of-type(3)').hover(function(){
	
	$('#img2').attr("src","img/icon-nav-czl-hover.png")

},function(){
	$('#img2').attr("src","img/icon-nav-czl.png")
})
$('.section-content li:nth-of-type(4)').hover(function(){
	
	$('#img3').attr("src","img/icon-nav-csx-hover.png")

},function(){
	$('#img3').attr("src","img/icon-nav-csx.png")
})
$('.section-content li:nth-of-type(5)').hover(function(){
	
	$('#img4').attr("src","img/icon-nav-cpws-hover.png")

},function(){
	$('#img4').attr("src","img/icon-nav-cpws.png")
})
$('.section-content li:nth-of-type(6)').hover(function(){
	
	$('#img5').attr("src","img/icon-nav-zgx-hover.png")

},function(){
	$('#img5').attr("src","img/icon-nav-zgx.png")
})
//function changeImg(){
//  $("img").attr("src","02.png");
//}
/*左侧定位*/
$('.dw-left').mouseover(function(){
	//alert(1)
	$('.dw-left>div:nth-of-type(1)').css('display','none');
	$('.dw-left>div:nth-of-type(2)').css('display','block')
})
$('.dw-left').find('div').find('img:nth-of-type(2)').click(function(){
	$('.dw-left>div:nth-of-type(1)').css('display','block');
	$('.dw-left>div:nth-of-type(2)').css('display','none')
})

$(window).load(function(){
	$('.dw-left>div:nth-of-type(1)').css('display','none');
	$('.dw-left>div:nth-of-type(2)').css('display','block')
})

/*右侧定位*/

$('.dw-right').find('ul>li').hover(function(){
	//alert(1)
	$(this).siblings().find('div').css('display','none');
	$(this).find('div').css('display','block');
})

/*回到顶部*/

$('.backTop').click(function(){
	//alert(1)
	$('body').scrollTop(0)
})